I have laminated 5/16" v/g d/f onto 1-1/2" LVL core material and will be edge gluing together to make plank doors. I will also be inserting 7/8" diameter steel dowels (4 per door equally spaced horizontally). I will be attaching 7/8" thick by 5" wide battens on the backsides. Can anyone offer pros and cons for this method? Maybe I shouldn't edge glue them and let them float?
(Architectural Woodworking Forum)
From contributor C:
How much does the LVL core grow and shrink in its extremes? Divide that by the number of expansion possible spots and it'll be clear how much movement you will need to allow for. Sounds like a well made flat door. Maybe a sheltered foyer or porch you would do okay to glue rigidly.
Here is a sketch of a common way to deal with board and batten doors to nearly eliminate growing and shrinking altogether over the entire width when "Z" bracing is not an option for whatever reason. You would glue the outer halves of the outer planks to the battens, and run the large panhead screws through holes larger than the screw diameter.